Aunty Entity was a ruthless ruler of a post-apocalyptic civilization known as Bartertown in the movie Mad Max: Beyond Thunderdome.
Aunty claimed that before the pox-eclipse she was a nobody, but the day after, she had the chance to become a somebody, for she was one that survived.
She was an Amazon-like woman who ruled with an iron-fist but found herself being challenged by the diminutive Master and his brutish henchman Blaster: Aunty Entity is enraged at this but is unable to publicly oppose the duo of "Master Blaster" due to Master being the only one who knows how to work all the machines that keep Bartertown running.
To this end the scheming Aunty Entity manipulates Mad Max into a gladiatorial battle (known as the "Thunderdome") against Blaster with hopes Max will kill him, in effect using Max as a convenient means of exacting political assassination without being caught.
Max manages to defeat Blaster in combat but refuses to kill him when he realizes after knocking his helmet off, that he suffers from Down Syndrome. Aunty Entity is enraged and has Blaster executed before invoking the harsh ritual of "bust a deal, face the wheel" upon Max. Max lands on Gulag, and is exiled from the town to the harsh desert outlands where his chances of survival seem bleak.
However, Max survives his ordeal and soon finds a group of children living in the wilderness who aid his recovery but wish to find "Tommorrow-morrow-land" -- a mythical paradise they believe lies in civilization. Max tells them that they are better off staying away from civilization (Bartertown) but some of the children refuse to listen and head off regardless - Max has little choice but to pursue them.
Max catches the children in the outskirts of Bartertown and together they go in search of Master, the dwarfish Master has been reduced to little more than a slave by Aunty Entity due to the death of his protector, Blaster. Max and the children free him, however alert the guards in the process and a frantic chase ensues between Aunty Entity's driving elite and Max and the lost children. The disruption in Bartertown's methane factory results in it becoming damaged and exploding. Max and his followers end at the hideout of the same pilot that attacked Max in the beginning of the movie. Max coerces him to help them escape in the Captain's Transavia PL-12 Airtruk, but there is too much weight and not enough runway between them and the attackers' vehicles, so Max takes a truck and drives it in front of the airplane, smashing a hole in the roadblock enabling the children to escape. Aunty finds Max, and having earned her respect, spares his life.
What becomes of Aunty Entity's civilization and the political position she once had remains unknown at the conclusion of the story.
Aunty Entity has great influence over Bartertown, and her scheming, political mind has secured her leadership over the town. She advocates many laws which she claims she wrote, and has established a series of rituals which have woven themselves into her brand of civilization to ensure her continuous leadership.
Despite all that she has helped build and for all the political cunning she wields, her lack of the scientific knowledge about the workings of Underworld leads to her inevitable downfall.
Aunty Entity is a fan of music and has a creative mind, she has her own musician, Ton Ton, in her quarters who plays the saxophone for her. Aunty Entity may well be a musician herself (see We Don't Need Another Hero).